What is the product of the two numbers, written in scientific notation? 1.4 x 10^3 and 5.6 x 10^2

A. .784 x 10^6
B. 7.84 x 10^5
C. 7.84. x 10^6
D. 78.4 x 10^5

Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?